CRIRES+ detection of CO emissions lines and temperature inversions on the dayside of WASP-18b and WASP-76b

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Table 1

Summary of UHJ observations with high-resolution emission spectroscopy.

Planet	T_eq (planet)	T_eff (star)	Discovered species on dayside	References
KELT-9b	3921 K	9600 K	Fe I	[1][2][3]
KELT-20b/MASCARA-2b	2261 K	8730 K	Fe I, Si I, Fe II, Cr I, Ni I	[4][5][6][7][8]
WASP-189b	2641 K	8000 K	Fe I, CO	[9][10]
MASCARA-1b	2594 K	7554 K	CO, H₂O	[11]
WASP-33b	2710 K	7430 K	Fe I, Si I, V I, Ti I, CO, OH, TiO	[5][10][12][13][14][15][16][17]
WASP-18b	2411 K	6400 K	CO, H₂O, OH	This work, [18]
WASP-76b	2228 K	6330 K	CO, H₂O	This work

References. ⁽¹⁾Pino et al. (2020). ⁽²⁾Kasper et al. (2021). ⁽³⁾Pino et al. (2022). ⁽⁴⁾Yan et al. (2022b). ⁽⁵⁾Cont et al. (2022b). ⁽⁶⁾Borsa et al. (2022). ⁽⁷⁾Johnson et al. (2023). ⁽⁸⁾Kasper et al. (2023). ⁽⁹⁾Yan et al. (2020). ⁽¹⁰⁾Yan et al. (2022a). ⁽¹¹⁾Holmberg & Madhusudhan (2022).⁽¹²⁾Nugroho et al. (2020).⁽¹³⁾Cont et al. (2021). ⁽¹⁴⁾Nugroho et al. (2021). ⁽¹⁵⁾Herman et al. (2022). ⁽¹⁶⁾Cont et al. (2022a). ⁽¹⁷⁾van Sluijs et al. (2022). ⁽¹⁸⁾Brogi et al. (2023).

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